An 8 Bit Current-Mode CMOS A/D Converter with Three Level Folding Amplifiers

Kyung-Myun KIM  Kwang Sub YOON  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E81-A   No.2   pp.252-255
Publication Date: 1998/02/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Analog Circuit Techniques in the Digital-Oriented Era)
Category: 
Keyword: 
CMOS,  three level folding amplifier,  current-mode,  A/D converter,  

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Summary: 
An 8 bit current-mode folding and interpolation analog to digital converter (ADC) with three-level folding amplifiers is proposed in this paper. A current-mode three-level folding amplifier is employed not only to reduce the number of reference current sources, but also to decrease a power dissipation within the ADC. The designed ADC fabricated by a 0. 8 µ m n-well CMOS double metal/single poly process occupies the chip area of 2. 2 mm 1. 6 mm. The experimental result shows the power dissipation of 33. 6 mW with a power supply of 5 V.